https://doi.org/10.1051/epjconf/202328303007
Search for the large-scale cosmic-ray anisotropies using the TA and TALE surface detector arrays
1 Graduate School of Science, Osaka Metropolitan University, Sumiyoshi, Osaka, Japan
2 Nambu Yoichiro Institute of Theoretical and Experimental Physics, Osaka Metropolitan University, Sumiyoshi, Osaka, Japan
3 Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba, Japan
* Corresponding author: toshi@omu.ac.jp
Published online: 28 April 2023
Origins of ultra-high-energy cosmic rays (UHECRs) are still largely unknown. In particular, the “2nd knee” around 1017 eV could be related to a transition of origins from the galactic to extra-galactic sources. In this scenario, one would expect the large-scale anisotropies of UHECRs to change over the 2nd knee region. We search for large-scale anisotropies using data taken from surface detector (SD) arrays of the Telescope Array experiment (TA), the largest cosmic-ray detector in the northern hemisphere, and from its low energy extension, the Telescope Array Low-energy Extension (TALE). In this contribution, we report on preliminary results in the search for the large-scale cosmic-ray anisotropies with 11-years TA SD and two-years TALE SD data.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
